a) Show the mechanism for the free radical chlorination of bromopropane. Clearly show the initiation, propagation, and termination steps.
b) Use the BDEs shown on page 1 to calculate the enthalpy change for this reaction.
c) Unfortunately, the student’s attempt in question 3 failed, and he only made traces of 2- chloropropane by using this approach. What was the major product of the reaction, and explain why it was formed instead. You may find the BDEs on page 1 to be helpful again.
Homework Answers
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a) Show the mechanism for the free radical chlorination of
bromopropane. Clearly show the initiation, propagation,...
help with page 23. How is the following step in the free radical chlorination mechanism described...
help with page
23. How is the following step in the free radical chlorination mechanism described *CH3 + 'Cl → CHCI a. initiation step b . termination step c. propagation step d. electrophilic step 24. Which compound would give the following alkene as the major product in an elimination reaction with CH3CH2ONat? ? CHỊCHONa. Br Br 1 3 a. 1 b. 2 c. 3 d. 1 and 3 25. What is the product of the following reaction? OH H2SO4 он...
Problem of the Day 18 1. (10 pts) Consider the following reaction: TO + HBr a....
Problem of the Day 18 1. (10 pts) Consider the following reaction: TO + HBr a. Estimate AH for this reaction (use table 6.1 in your textbook) b. Is AS for this reaction positive or negative? Explain. C. Determine if AG is positive or negative. d. Is the sign of AG (positive or negative) dependent on temperature? Why? TABLE 6.1 BOND DISSOCIATION ENERGIES (AH) OF COMMON BONDS KJ/MOL KCAL/MOL KI/MOL KCAUMO Bonds to H H2C=CH-CH3 HCC-CH3 KJ/MOL KCAL/MOL 385 92...
Problem of the Day 18 1. (10 pts) Consider the following reaction: Br HBO a. Estimate AH for this reaction (use ta...
Problem of the Day 18 1. (10 pts) Consider the following reaction: Br HBO a. Estimate AH for this reaction (use table 6.1 in your textbook) b. Is AS for this reaction positive or negative? Explain. C. Determine if AG is positive or negative. d. Is the sign of AG (positive or negative) dependent on temperature? Why? TABLE 6.1 BOND DISSOCIATION ENERGIES (AH) OF COMMON BONDS KJ/MOL KCAL/MOL KI/MOL KCAUMO Bonds to H H2C=CH-CH3 HC=C-CH3 KJ/MOL KCAL/MOL 385 92 489...
Problem #3 Calculate AH° for the following reaction using the bond energies found in Table 6.1...
Problem #3 Calculate AH° for the following reaction using the bond energies found in Table 6.1 on page 228. Is this reaction spontaneous? (CH3)3C-H + 12 (CH3)3C-1 + HI TABLE 6.1 BOND DISSOCIATION ENERGIES (AH) OF COMMON BONDS KJ/MOL KCAL/MOL H2C=CH-CH3 HC-C-CH KJ/MOL KCAL/MOL 385 92 489117 KJ/MOL KCAL/MOL 444 106 335 80 285 Bonds to H. H-H H-CH3 H-CH2CH3 H-CH(CH3)2 H-C(CH3)3 (CH3)2CH-F (CH3)2CH-CI (CH3)2CH-Br (CH3)2CH- (CH3)2CH-OH 68 222 435 104 435 104 41098 39795 91 473 113 53 381...
TABLE 6.1 BOND DISSOCIATION ENERGIES (A) OF COMMON BONDS KJ/MOL KCAL/MOL Bonds to H H2C=CH-CH2 HCC-CH,...
TABLE 6.1 BOND DISSOCIATION ENERGIES (A) OF COMMON BONDS KJ/MOL KCAL/MOL Bonds to H H2C=CH-CH2 HCC-CH, KJ/MOL KCAL/MOL 385 92 489117 HH 435 80 104 104 KJ/MOL KCAL/MOL 444 106 335 285 222 381 91 (CH3)2CH-F (CH) CH-CI (CH3)2CHBr (CH),CH (CH3)2CH-OH H-CH3 H-CH2CH3 HCH(CH3 H- CH3) 435 104 109 Bonds to methyl CH; CHEF CH3-C1 CH3-Br CH3 CH, OH CH I I 356 85 381 91 HC-c-X CHE (CH3)3C-H (CH3),C-F (CH),C-C1 (CH3)2C-Br (CH3), (CH)C-OH 381 444 331 106 111 464...
hello please be as specific as possible please 188 ChemActivity 20 Radical Halogenation of Aanes Model...
hello please be as specific as possible please
188 ChemActivity 20 Radical Halogenation of Aanes Model 8: Selectivity of the Photo-Halogenation Reaction • Radical halogenation with F, is unselective, violent and dangerous limiting the usefulness of this reaction in organic synthesis. • Radical halogenation with le is so slow as to be useless in organic synthesis • Radical halogenation with Br, is right It is very useful in organic synthesis. The rate is manageable and reactions with Br, are very...
Shown below is an alternative mechanism for the photochemical chain radical chlorination of methane: Cl_2 +...
Shown below is an alternative mechanism for the photochemical chain radical chlorination of methane: Cl_2 + CH_4 right arrow CH_3CI + HCL Step 1 (initiation): CI_2 right arrow 2CI- Step 2 (propagation, part 1): CI +CH_4 right arrow CH_3CI + H Step 3 (propagation, part 2): H + CI_2 right arrow HCI +CI. Using the data provided below(bond dissociation energies, BDE), calculate delta Hdegree for each of the two propagation steps of the alternative mechanism. BDE: C-H bond, 104kcal/mol; C-Cl...
1. Bond Dissociation Energies and Free Radicals Bond Bond Dissociation Energies (kJ/mol) Bond BDE Bond BDE...
1. Bond Dissociation Energies and Free Radicals Bond Bond Dissociation Energies (kJ/mol) Bond BDE Bond BDE (kJ/mol) (kJ/mol) H-H 436 CH3-H 439 H-F 570 CH3CH2-H 432 H-CI 432 (CH3CH2 413 BDE Bond (kJ/mol) 10-N 350 0-0 180 F-F O-H 0-C O-F 460 BDE (kJ/mol) | 200 180 159 | H-Br H-I 366 298 404 350 O-C1200 O-Br (CH3)3C-H C-C (sigma) C=C(pi) 210 C1-C1243 Br-Br 193 243 0 -I 220 I-I | 151 A. The enzyme methane monooxygenase catalyzes a remarkably...
Consider the following reaction: 6.20 Br +HBr (a) Use Table 6.1 to estimate ΔΗ for this reaction. (b) AS of this reaction is positive. Explain. (c) Determine the sign of AG. (d) Is the sig...
Consider the following reaction: 6.20 Br +HBr (a) Use Table 6.1 to estimate ΔΗ for this reaction. (b) AS of this reaction is positive. Explain. (c) Determine the sign of AG. (d) Is the sign of AG dependent on temperature? (e) Is the magnitude of AG dependent on temperature? Go Tools Window Help :) 72%-) Tue Apr 30 10:38 A. 1 5492r25660150abebaf41ebet.pdf (page 248 of 1,319) TABLE 6.1 BOND DISSOOAmON ENERGIES (M.ฯ OF COMMON BONDS K/MOL KCAL/MO 92 117 НС-о-сн,...
pleas help 5,6,7,8,9,10 III IV 5. The product of free-radical halogenation reactions is an alkyl halide....
pleas help 5,6,7,8,9,10
III IV 5. The product of free-radical halogenation reactions is an alkyl halide. The major amount of this halide forms during the second step of propagation. However, you should be aware that one possible termination step also forms alkyl halides. Why does the majority of the alkyl halide product come from the propagation step and not the termination step? A. At any given time during the reaction, the concentration of both the alkyl radical and the halide...
help with page
23. How is the following step in the free radical chlorination mechanism described *CH3 + 'Cl → CHCI a. initiation step b . termination step c. propagation step d. electrophilic step 24. Which compound would give the following alkene as the major product in an elimination reaction with CH3CH2ONat? ? CHỊCHONa. Br Br 1 3 a. 1 b. 2 c. 3 d. 1 and 3 25. What is the product of the following reaction? OH H2SO4 он...
Problem of the Day 18 1. (10 pts) Consider the following reaction: TO + HBr a. Estimate AH for this reaction (use table 6.1 in your textbook) b. Is AS for this reaction positive or negative? Explain. C. Determine if AG is positive or negative. d. Is the sign of AG (positive or negative) dependent on temperature? Why? TABLE 6.1 BOND DISSOCIATION ENERGIES (AH) OF COMMON BONDS KJ/MOL KCAL/MOL KI/MOL KCAUMO Bonds to H H2C=CH-CH3 HCC-CH3 KJ/MOL KCAL/MOL 385 92...
Problem of the Day 18 1. (10 pts) Consider the following reaction: Br HBO a. Estimate AH for this reaction (use table 6.1 in your textbook) b. Is AS for this reaction positive or negative? Explain. C. Determine if AG is positive or negative. d. Is the sign of AG (positive or negative) dependent on temperature? Why? TABLE 6.1 BOND DISSOCIATION ENERGIES (AH) OF COMMON BONDS KJ/MOL KCAL/MOL KI/MOL KCAUMO Bonds to H H2C=CH-CH3 HC=C-CH3 KJ/MOL KCAL/MOL 385 92 489...
Problem #3 Calculate AH° for the following reaction using the bond energies found in Table 6.1 on page 228. Is this reaction spontaneous? (CH3)3C-H + 12 (CH3)3C-1 + HI TABLE 6.1 BOND DISSOCIATION ENERGIES (AH) OF COMMON BONDS KJ/MOL KCAL/MOL H2C=CH-CH3 HC-C-CH KJ/MOL KCAL/MOL 385 92 489117 KJ/MOL KCAL/MOL 444 106 335 80 285 Bonds to H. H-H H-CH3 H-CH2CH3 H-CH(CH3)2 H-C(CH3)3 (CH3)2CH-F (CH3)2CH-CI (CH3)2CH-Br (CH3)2CH- (CH3)2CH-OH 68 222 435 104 435 104 41098 39795 91 473 113 53 381...
TABLE 6.1 BOND DISSOCIATION ENERGIES (A) OF COMMON BONDS KJ/MOL KCAL/MOL Bonds to H H2C=CH-CH2 HCC-CH, KJ/MOL KCAL/MOL 385 92 489117 HH 435 80 104 104 KJ/MOL KCAL/MOL 444 106 335 285 222 381 91 (CH3)2CH-F (CH) CH-CI (CH3)2CHBr (CH),CH (CH3)2CH-OH H-CH3 H-CH2CH3 HCH(CH3 H- CH3) 435 104 109 Bonds to methyl CH; CHEF CH3-C1 CH3-Br CH3 CH, OH CH I I 356 85 381 91 HC-c-X CHE (CH3)3C-H (CH3),C-F (CH),C-C1 (CH3)2C-Br (CH3), (CH)C-OH 381 444 331 106 111 464...
hello please be as specific as possible please
188 ChemActivity 20 Radical Halogenation of Aanes Model 8: Selectivity of the Photo-Halogenation Reaction • Radical halogenation with F, is unselective, violent and dangerous limiting the usefulness of this reaction in organic synthesis. • Radical halogenation with le is so slow as to be useless in organic synthesis • Radical halogenation with Br, is right It is very useful in organic synthesis. The rate is manageable and reactions with Br, are very...
Shown below is an alternative mechanism for the photochemical chain radical chlorination of methane: Cl_2 + CH_4 right arrow CH_3CI + HCL Step 1 (initiation): CI_2 right arrow 2CI- Step 2 (propagation, part 1): CI +CH_4 right arrow CH_3CI + H Step 3 (propagation, part 2): H + CI_2 right arrow HCI +CI. Using the data provided below(bond dissociation energies, BDE), calculate delta Hdegree for each of the two propagation steps of the alternative mechanism. BDE: C-H bond, 104kcal/mol; C-Cl...
1. Bond Dissociation Energies and Free Radicals Bond Bond Dissociation Energies (kJ/mol) Bond BDE Bond BDE (kJ/mol) (kJ/mol) H-H 436 CH3-H 439 H-F 570 CH3CH2-H 432 H-CI 432 (CH3CH2 413 BDE Bond (kJ/mol) 10-N 350 0-0 180 F-F O-H 0-C O-F 460 BDE (kJ/mol) | 200 180 159 | H-Br H-I 366 298 404 350 O-C1200 O-Br (CH3)3C-H C-C (sigma) C=C(pi) 210 C1-C1243 Br-Br 193 243 0 -I 220 I-I | 151 A. The enzyme methane monooxygenase catalyzes a remarkably...
Consider the following reaction: 6.20 Br +HBr (a) Use Table 6.1 to estimate ΔΗ for this reaction. (b) AS of this reaction is positive. Explain. (c) Determine the sign of AG. (d) Is the sign of AG dependent on temperature? (e) Is the magnitude of AG dependent on temperature? Go Tools Window Help :) 72%-) Tue Apr 30 10:38 A. 1 5492r25660150abebaf41ebet.pdf (page 248 of 1,319) TABLE 6.1 BOND DISSOOAmON ENERGIES (M.ฯ OF COMMON BONDS K/MOL KCAL/MO 92 117 НС-о-сн,...
pleas help 5,6,7,8,9,10
III IV 5. The product of free-radical halogenation reactions is an alkyl halide. The major amount of this halide forms during the second step of propagation. However, you should be aware that one possible termination step also forms alkyl halides. Why does the majority of the alkyl halide product come from the propagation step and not the termination step? A. At any given time during the reaction, the concentration of both the alkyl radical and the halide...
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